Pump



oct. 12,1943.`

I .1. P. DAMoN'TE PUMP Filed May 7, 1942 2 Sheets-Sheet 1 Bnentor i p. 'Damonte John Y Mu', (Ittorneg www? 01:11.12, 1943. J, P, DAMQNTE 2,331,310'

Snnentor' 6I 62 Gttorneg Patented Oct. 12, A1943 UNiTED l STATES PATENT ol-"FICE l ztajo l. l John P. pamonte, New Orleans. La.: Application May 7, 1942, Serial.No.'4.4-2,074

'v 's claims.` (ci. 10s-"413) This invention frelates to u improvements in- An,object of the invention is the provision of i a pump for insuring the delivery of an excep-A tionally large volume of .uids in which a priming means is incorporated for supplying the pump with the necessary. amount oillquids during the starting ofthe pump.

A further object of the invention is the provision of a pump which is initially supplied with a' priming fluid and which may be continued during the normaloperation of the pump for not onlyv maintaining the ilow of the liquids,

through the pump but for increasing the capacity of the pump.

A further object of the invention is the prof vision oi a pump in which a priming uid is supplied and maintained in, circulaton through various compartments orv 'chambers of the pump after which it is dischargedinto an outlet passage through which the main volume of the liquid is forced.

This invention will be best understoodfrom a consideration of the following detailed description, in view of the accompanying'drawings in the sneu In and is also substantially. hemispherlcaL Said rotor is spaced from the walls of the. shell II) to provide the chamber I2, which terminatesat a closure plate generally desig-fnated by the numeral I6 which is blted at I1 to a flange I8 formed at the inner Yperiphery of Athe shell I0.

The plate I6 vis 'formed with an integrally.

u A-formed chanel memberz which is curved along an arc of a circle as shown in Fig. 5.- The mem- 'ber 20 includes an extension'ZI which forms an I inlet pipe and *is adapted to be connected to the around the longitudinal axisof the pump and terminates'in 22.- An inspection of Fig. 1 will show that the inner wall of the tube where ity is integrallyformed with the platev I5,"is cutA forminga part of the specication; nevertheless, itis to be understood that the inventionis not confined to the disclosure, being susceptible of such changes and modication's as define no material departure from the salient` features of the invention as expressed in the lappended claims.

In the drawings: Y Figure 1 is a vertical section taken alongthe line I-I of Fig. 2.

Figure 2 is a transverse vertical section taken along the line 2--2 of Fig. 1.

Figure 3 is a vertical section similar; to that lshown in Fig. 1 in which the outer shell and inner shell or rotor only are disclosed in section.

' the tube 20 and-thejintegrallyjformed platel I 6.

same source ofk supply -from.whichy suction II derives its supply or a supply of priming fluidv which .is the 'same type. of iiuid supplied to the chamber I2. It will be noted that the member 20 extends from the pipe 2-I in a., circular arc away to provide an arcuatelyshaped passage 23 which places thel tube 2l) throughout substantially its length in communication with a suction compartment 24.

'Al suction compartment is formed betweena partition or wall 25, the inner `wall ofthe rotor 15 and an inturned portion 28 that extends from The intumed portip'n 26 has an annular flange 21 thatis bolted at'28 to the wall 25 to form a cup-shaped depression atthe inneriaceofxthe Pump.'

division wsu 2s is shown' morefpammuarly in dotted lines in Figures 2 and 5. ,".l'hcgreaterl portion ofthe wall at its periphery is cut'- away as shown at 30 to'provide an annular passagel betweenthe suction or priming compartment-24 and a pressure compartment 3l which is also Figure 4 is a section similar to that shownIin 5 Fig. 3 in which the outer shell only is 'shownfin section.-

Figure 5 is a front view ofthe pump. Referring more particularly to the drawings, llldesignates a shell which is hemispherical in shape with the dome portion flattened and provided with an opening II through which fluids are adaptedto be drawn for supplying a pressure chamber I2 with the 'requisite quantity. of

fluids. The ange I3 is adapted tobe connected to a pipe which supplies the uid to the cham-v ber,I2. 1 Y

A rotor generally Adesignated by the numeral I5 is located approximately concentrically withfiormed betweenthe inner wall of the rotor I5 and the wall or partition 25. Thus it will be seen that thesuction compartment 24' and the pressure compartment 3| are in communication at the bottom portion while an arcuately shaped iange 32 lcuts oil communication at theupper .portions oi the compartments 24 and. ,3L

Furthermore, the outer peripheral edge of the flange32 is beveled as shown at 33-so that it,

will neatly t the curved wail of the .hollow rotor 33 which isthreaded onto a collar 31 extending` from and integrally formed with the partition wall 2i in order to prevent leakage of nuid at this point from the pump. A hub 38 receives the outer end of the shaft 35 and is keyed at l! to said shaft. 'I'he tapering of the outer end of the shaft as shown at 4l and likewise the tapered opening in the hub 38 will prevent the hub from binding against the partition wall 2i.

It will be noted from Fig. l that the curved end of the rotor Il is provided with an opening 4I through which projectsthe reduced end 42 of the shaft I3. A washer 43 rests on the outer end of member 3l and does not touch shoulder 44 of the shaft Il. A nut 41 screwed onto the outer end of said shaft securely binds the hub 38 to the shaft so that when the shaft is rotated the rotor Il will likewise be revolved. However, the annular passage 4I in the rotor I5 provides for the discharge of fluids from the pressure compartment 3l.

The periphery of the hollow rotor I3 is proyided with an annular .proove 48 .to vreceive an ceives an annular rib 54 concentric with the rib 43 and said rib also projects from the enlarged portion 4B on theplate I.. A packing l5 is located between the ribs u and u. 'I'he outer wall of the rotor I 5 las plurality of integrally formed venes Il which extend outwardly therefrom and have theirouter edles in close association with the inner wall of the shell Il. 'I'hese vanes are so curved that when they are revolved they will create a suction on the liquid which enters the opening II.

These vanes create also considerable pressure on the liquid in the pressure chamber I2 s'o that the liquid is forced outwardly .towards and l n shawn more 4 particularly in Figs. 2 and 4 is provided with a through an arcuately-shaped passage iailiig.

5) which is provided in the plate il near the periphery thereof, whence said liquid will enter an arcuately-shaped discharge tube .8L thetds formed as an outward extension Vof the plate. The passage Ila places the greater portion of the chamber I2 in communication with the tube II. A continuation of the tube II as shown at 82 is adapted to be connected to a pipe when the liquid from the pump is conveyed to a. desired point.

Vanes 85 shown more particularly -in Figs. 1 and 3are formed integrally with the inner wall of the rotor I5 and the outer wall of the hub 38 in the pressure .compartment 3 I. In other words, the varies 60, 65, hub 38 and rotor I5 are cast in one piece as an integral formation. The vanes 65 are curved in a helical manner somewhat similar to the vanes in the pressure chamber I2 but are set in an opposite direction to the setting Q'fihe vanes 60. I

'I'he vanes 60 form diverging passages while the varies B5 form converging passages. The priming fluid in the chamber 24 is forced towards the axial center of the rotor I5 thence outwardly through the restricted passage 4I `in the hemispherical rotor I5.

A plurality of vanes 66 are formed integrally upon the inner wall of the ring 5I. Since this ring is located within the suction compartment 24 and is secured to the inner wall' of the rotor I5 adjacent the plate IB, said vanes are so constructed and'positioned inrelation with flange 32 that they will create a suction in the tube 20 and draw in priming fluid from this tube into the suction compartment whence this fluid is then forced through the arcuately shaped opening at a portion of the periphery of the partition wall 2l into the pressure chamber 3|. As has been explained the vanes 65 are so constructed and positioned that they will force the liquid or fluid from the pressure compartment through the opening 4I into'the .pressure chamber I2.

The operation of my device is as followsf When the shaft 35 is rotated in any approved manner in the direction indicated by the arrows in Figs. 1 and 3, the rotor II will be revolved so that all of the Vanes connected therewith will likewise be revolved. The number of vanes B6 in the suction compartment 24 will draw in the priming iluid and this uid is then forced under pressure into the pressure compartment as indicated by the dotted arrows in Fig. 3. It will be seen that the fluid passes through the opening 4I into the pressure chamber I2 and it will be forced by the vanes $0 into the discharge tube 8| When the pump has been properly primed the liquid or fluid which is drawn through the passage Il will follow the arrows indicated in full lines (Fig. 3) and then will .be discharged through the tube 6I into the extension I2.

The members I0 and Il are shown as hemispherical in shape but modifications of these configurations may be made without affecting the eillciency of the pump.

Due to the position, shape and angle of varies and 6I, and the direction of their rotation, also the position of flange 32 in relation to passage 23, it has been found that a very high vacuum is developed in channel 20. Due to the creation of the vacuum by said means in channel 2# or extension thereof any liquid exposed to its internal surface would be drawn into the suction compartment 2l. where vanes 66, due to their anwater or liquid through the opening 4I into chamber I2.

Sincethe Vflow of water or liquid has been started and is passing through outlet 4I, it will come intoy contact with nut 41. The surface of this nut 'is so arranged that it will deflect any liquid leaving opening 4I and entering chamber I2. By this means the water or liquid will come in contact with vanes 60, whose rotation, position and angle will create a centrifugal force and thereby force the 'Water or liquid to a point at the edge of the blade and inner surface of shell I0, resulting in sealing up the clearance between shell I0 and outer edges of vanes 60, with the liquid sealed at this point. Due to the continued flow of liquid or water through the outlet 4I into chamber I2, there will be maintained a liquid or water seal between the outer edges of varies' Bil and the inner surface of shell I0. After' this seal has developed there will be created a vacuum y in chamber I2 and suction tube II, caused by vanes 60, because of its angle, position and rota-4 tion, aided by the water or liquid seal.

the outside 'ofthe .tube if wm force the air thereininto chamber I2.- 4

Due` to the shape and angle of vanes 60 and the liquid seal, the air will be forced out through tube 62, until there is no more air in tube Ii or chamber i2. When this is accomplished vanes 60 will begin handling the liquid which will follow the air. It has been f/oundfrom actual .prac' tice that thiscentrifugal .pumpdoes not become airbound.

It will be further borne in that when i there is no liquid at suctionfchamber Il there will be no necessity to pump water to supply'the aui'iiliary suction tube 20.

I claim; y e 1. A pump comprising a hemispherical shell,

a closure plate secured to theperiphery. of the shell, a hollow hemispherical rotor within and spaced from the walls ofthe shell toprovide a pressure chamber, said shell having a'uid inlet inthe axial center thereof leading into the pressure chamber, av partition within the rotor and vdividing the hollow rotor into a suction com- A partment and a communicating pressure compartment, acurve'd tube integral with the' plate and being in communication with the suction compartment through its length, a second curved tube in communication throughout its length with s the pressure chamber and having an extension.

' forming a discharge, means supplying the firstmentioned tube with a priming uid, vanes secured to the inner and outer walls of the rotor for creating pressure on theuids in the pressure pressure chamber re compartment and in the spectively, and vanes on the inner wall of the rotor and confined to the suction compartment for drawing priming uid into said compartmentand 4for forcingvsaid iiuid into the prsure comvpartrnent.v

-2. Avpump comprising a hemispherical shell, a closure plate secured to the periphery of the shell, a hollow hemispherical rotor within and spaced from the walls of the shell, to provide a pressure chamber, said shell having a uid inlet' inthe axial center thereof leading into the pressure chamber, a partition within the rotor and Y 'dividing the'hollow rotor into a suction compartment and a communicating pressure compartment, said partition being cut away along a l `portion of its periphery to provide a free passage of uids between the two compartments, a curved tube integral with the plate and being in communication with 'the suction .com artment compartment, said rotor havingan openin which yprovides communication between,k the pressure compartment -and the pressure chamber, vanes in the'pressure compartmentand carried by the rotor for forcingthe priming uid into the pres- '-sure chamber, vanes in the pressure chamber and operated by the rotor for drawing iiuid .through the inlet intofthe pressure chamber a'nd for forcing the iluid out of said pressure cham.'-

.ber, and a. .discharge-pipe for carrying off the .uid under pressure.

4. A pump` vcomprising a hollow shell having an inlet opening at one end adapted td be connected to a supply of fluid, the other endjof the shell .being closed, a hollow rotor located con--A centrically inthe shell and forming `with the 'shell apressure chamber in communication with thesinlet opening,`vanes on the rotor and revolved insaid chamber for forcing fluid therethrough, a discharge conduit connected with said chamber, means dividing the rotor into a suction I compartment and a pressurecompartment, said compartments, having' restricted communication with each other, vanes connected tothe rotor and operating in the suction compartment to draw in a priming iluid, the pressure compartment being in communication wit the pressure chamber, a series of vanes on t e rotor and operated in the pressure compartment for drawingr in uid from the suction compartment and Jdischarging the same underpressure into the pressure compartments and means. for supplys ing priming fluid tothe suct on compartment. 5. A pump comprising a. ollow shell having an inlet opening at .one en fadapted to be connected to a supply :of iiuid,\ a plate `closing the other end of the shell, a hollow rotor located concentrically in the shell and forming with the i shell a pressure chamber in communication with l pressure'chamber, a series of vanes on the rotor through its'length, a second curved tu in com munication throughout its length wlth'the pressure chamber andv having anextension forming a discharge, meanssupplying the mst-mentioned tube with a priming uid, vanes secured to the inner and outer walls of.the rotor vfor creating pressure on the fluids in the pressure compartment and in the pressure chamber respectively; and vanes on the inner wall of the rotorrand conned to the suction compartment for drawing priming luid into said compartment and forV forcing said nuid into the pressure compartment'.

'3. A pump comprising a hollow shell havingv one end open, a closure plate secured to the open end, the opposite end of the shell having an inlet opening, ahollow rotor within and spaced from the walls of the shell to form a presi sure chamber, av partition dividing the hollow i rotor into a suction compartment and a pressure. v

r compartment, said partition'being cut away to provideY a passage between the two compartments, means supplying .a priming uid to the and operated in the pressure compartment for drawing 'in uid fromthe suctioncompartment and discharging the same under pressure into the pressure compartment, an arcuateiysshaped inlet tube formed integrally with the plate; said plate and tube'having a curved slot extending substantially theV length of the tube for placing the tube in communication with the suction compartment, and means connected with the tube Y adapted to supplya priming iluid thereto.

' charge pipe connected tothe plate. a hollow 6. A pump comprising 4a. hollow stator ofA heini-' spherical shape having an inlet opening at' onev end, aclosure plate secured to the opposite end v of said stator,l a fluid priming pipe and a disrotor of bami-spherical shape in the stator and forming with the stator a pressure chamber,

' which is'in communication with the inlet opening, means on the exterior wall ofthe rotor for drawing in iiuid and for forcing the same. through the discharge pipe. the lrotor being pro'- vided with communicating suction and pressure j suction compartment, vanes in the suction com A partment4 and carried by the rotor for drawingin the priming iluid which enters the ressure z compartments, the priming pipe adapted to supply the suction compartment with priming fluid, the pressure compartment having restricted outlet communication with thepressure chamber, means within the suction compartment and on the interior wall `of the rotor for during in priming iluid and forcing the same'v into thepres-Y sure compartment, and means within the Dres' sure compartment and on the interior wall'v of the rotor for forcing the priming fluid from lsaid compartment into the pressure chamber, the discharge pipe being in communication with the pressure chamber. i

7. A pump comprising a `hollow stator having an inlet opening at one end and an outlet Port at the other end, the other end thereof being A closed, a hollow rotor within the stator and diA vided interiorly into a suction compartment and a communicating pressure compartment, the rotor forming with the stator a pressure chamber, venes connected to the exterior walls of the rotor and located inthe pressure chamber for causing Aliquid to be drawn through the inlet opening and discharged through the outlet pressure chamber.

JOHN P. DAMON'IE. 

